Improvement in pumping-englnes



PATENT OFFICE.

HEURY R. 'ORTHING'ION, OF BROOKLYN, NEW YORK.

IMPROVEMENT m PUMPING-ENGINES.

Specification forming part of Letters PatentNo. 24,838, datedJuly 19, 1859 To all whom it may concern: Be it known that l, HENRY R. WoRTHINo- TON, of Brooklyn, in the county of Kings and ,State of New York,'hav.e invented a newand Improved Combination of Pumping-Engines and Arrangement oft-he Valve-Motionilherefor; and I do hereby declare that-tire following is a full and exact description thereof, reference being had to the annexed drawings.

lhe main featu'rc'of this arrangementlis-the division of the laborto be performed. between two working-pistons, which act reciprocally upon each others steam and exhaust valves. It is applicable to that kind of engine known asdirect acting, which works without-- the use of a crank or other device for producing rotary motion. The Cornish engine is a familiar example of this variety.

Forconvenience of referencev the pair of engines which form the combination will be designated throughotitthis specification and in the drawings as engine A and engine 15.

' Engine A is provided with suitable attachm entsfor actuating the steam and exhaust alves of engine B, and by like attachments;

the motion of engine B is made to operate,

upon the steam and exhaust valves of engine ,A'. In addition to this. each engine is made to operate upon its own valve at or near the termination of its stroke for the purpose of shutting 0d the steam and arresting further motion of the piston; but neither engine has command of the motions of thevalve or valves belonging to itself, except for the purposes connected with stopping orretarding its ownmotion.

ings may be considered as in motion; The same letters in the different figures designate the same parts of the machines.

Figure l is a side elevation with cylinders and valve chests in section. The pistons are of ordinary construction, and the steam-- valves of the kind known-as slide-valves.

For. the better understanding of'' these cllfects, the engines shown in the draw- Fig. 2 is a plan, and Fig. 3 an end elevation, with steam-chest and slide-valvesin section.

C O represent steam-cylinders; P P, pum pcliainbers,; D D, piston-rods; E E, steam slide-valvesgE F, valve-rods; G G, swinging levers moving the rock shafts IIH' I I,-stopp'ing-levers' for closing steam-valves; K I", 'hnks connecting valve-rods and rock-shafts. jEngine'Abeingsupplied with steam, its

. iston commences to move from left to ri ht.

Atfitho middle of its stroke or at any-other point therein which may be'found desirable.

it a'ctuates the steam and exhaust valves of.

engine I-lby coming in contact with and moving the arm G, which in its turn moves the steam-valve E, with which it. is connected by the rock-shaft II and the link K and valverod F. Still going on, it completes itsstroke, and finally terminates its motion by closing its own valve. with the stopping-lever 1'. Meanwhile the piston of engine 13, having been supplied with steam by the movement of en gine A, as aforesaid, has commenced its ownstroke from left to right. On its way it en counters and moves thevalve of engine A by starting and moving 1}, which, being connectedby the rock-shaft ll'and link K with the valve-rod F an d valve E ofengine'lhgives the proper motion to the steam slide-valve E. Then it goes on to the cndot its stroke, closes its own valve with the lover I and rests quietlynntil again called upon to move by the action of engine A. Engine A', having already commenced its return, is followed by-. B so soon as the point is reached where the steamvalve'of B is actuated. In this way onopiston takes up its motion, proceeds on. its stroke,

act-hates the valve of the othercngine, shuts its own valve, and stops,'with .no power to move again, except what is derivedfrom the operation =01. the other engine. The conse quence of this reciprocal service rendered by either engine to the other is a motion of the rhost positive and controllable character, entirely free from shock and from the harshness under which a single direct-action engine labors. For it will be seen that any desired amount of time may be allowed for the repose of the piston at the end of its stroke by arranging to have the other piston act upon the valve sooner or later in itsstroke. This is accomplished by suitable adjustments on asses the. lovers which actuate the steam-valves, so as to allow of more-orless lost motion. For example-Abe. links K Kinstead 0E being rigidly connected to the valve-rods F B" may slide back and forth for a little distance-controlled by sorewstops. Thus-one-piston may leave the right-hand term i'hus just as the other arrives, lying inactive during the whole timeof astrok, or the two pistons moving.-

in opposite.directions,lii'ay-cl'oss each other at the iniddlepoint ofv the stroke- Within these .t'wo extremes a practical time for the repose of the piston will he found that ellowsellthe woterwelves to come quietly to their sealtsg',

theourrents 'to subside, endequiliorium of pressure to be formed without the noise and Qhurtfnl shocks which follow all attempts to,

:force these results by the sudden reciprocaii'onof a, piston. And. li'ere animportent diliferehce between the character, of theinotion thu's produced and that ofv any otheronglnethe Cornish pnmpingenginmfor examplemaybe noticed as being the basis'of the practiczil su periority of the engagement herein de-' scribed. 1 It is that the two "pistonsarenever at rest at the sanie time, but that either one or the other is'oon stantly eiiertin gits I all effect 1'1 pen the water-column, preventing it from coming to a state of rest in-the forcing tube or ma linand insuring. a. constantpropnlsionend delivery. As-regards the arresting of the motion by the action of the enginegupon its own valve, it is obvious that some'cx-pedieots suoh es 3, buff-'- ing apparatus or dash-pot might; befsnbsti tllffid inca'ses where the smellnes's or the engioes would .makethe blow insignificannor w here eoonomyinv first cost isthe greato'onsideretion, or a sdpplemcntary steam-valve may be employed for the. single, purpose of admitting suificie'nt stealm at the end of the stroke to arrest the motion- 02 the steam-pistone; butthese exp edients are not -set fonthj tior'n.

1. "lhe'combination exhibited of -two diremit-acting puhipingfien gines propelled by steamer-other fluid, so ar with particularity in this speoificaisioh, est e are plainly defective in their operation, nd not-to housed except in the cases cited. H It is of no importance other than connected .wil;h mechanicalconvenience. whether the.

working-cylinders are arranged side'b ,side

or ehd .to end or onejnpon the other, A l-ighet is required are; two Working-engines con em iently arranged for reaching and actuating.

eagh others steam. and'exhaust valves.

Although the engines herein-described are called steam-engines?! it manifcs'filyeesy to employ the elastic force of any other fluid or vapor, or the .hydrosnatifi ressure of a, col 'nnm' of-weter in a similar combination. For.

this lest-named motor in .isindeed eminently" .adapited by its freedom from "concussiye ac- Having hus'rnny described my invention what Iwc'laimi is' 5T nerein setsgforlah ian d mnged'as that each. engine shall actusfe the inlel: and outlet fv-alves governinglzhe rho tive EPOWQ? of the unholy-therebyinsu'ring'ihe con stunt action-of 'at least one-pump-piston'lipon the waiter and relieving the alction of .thepii'mp from shocks-and concussions. 2. The arrangement her-eimshown'of two distinct systems of lovers adapted to the steam and, exhaust Valves of each engine, the one system to be operated upon for producing motion and for determining the-durati0n01'.

.the repose of. thepistonat the termination of ftlhe stroke, the other for'bringiiig the pistons toe state of reshqall substengial-ly as herein explained and set forth. 5

HENRY- R. WORTHINGTON. -.Wi t nesses;.

.D LJJHINES, WM; A., PERRY." 

